uetn A n /</ ( ic I o /t\s' . 310 



28'-l:; zygomatic breadth 16-1 ; nasals 7*8 x 3*2 ; interoibital 

 breadilii; length of brain-case from lateral occipital pro- 

 tuberances l-4'l; height of crown from alveolus of m^ 8*5; 

 ]>alatihir length 14:'2 ; diastema 8*3; palatal foramina 5'2 ; 

 upper molar series (crowns) (j*8, (alveoli) 7"1. 



Hah. Djarkent, Semiretschensk, E. Kussian Turkestan. 

 " On the banks of tlie liiver Ussek." 



Type. Adult male. B.M. no. 11.12.14.30. Original 

 number 17. Collected lltli ]Marcli, 1011, by VV. Ruckbeil. 

 Presented by the Duke of Bedford, K.G. 



The skull of this vole is as much larger than that of 

 Thian-s'.ian and Altai rei)resentatives of M. arvalis as it is 

 as compared with European examples of that wide-ranging- 

 species. 



Mt'crotus [Pliaioinys) afyhanus, sj). n. 



" Golunda meltadn,'' Gray (specimen c), Ilorsf. Cat. Mamm. Mas. 



E. I. C. p. 144 ^1851). 

 Arvicola mandarinus ?, Blauf. J. A. S. B. 1. pt. 2, p. 108, pi. ii. fig. C 



(teeth) (1881) ; Thos. Trans. Liun. Soe. (2) Zool. v. p. 59 (1889) : 



nee Milne-Edwards. 



General characters of Phaiomys, but 7??i more as in Pitymys. 

 Bullae unusually large. Size rather smaller than in 

 M. hlytliii. Eur straight, fairly coarse, not mole-like. 

 Colour above more or less buffy, but as the original 

 Griffith's skin is old and faded, and the more recent speci- 

 mens are in spirit, an exact description of the colour cannot 

 be given ; Blanford calls it " light greyish rufescent brown." 

 Under surface broadly washed with bufFy whitish. Ears 

 short, rounded. Claws of fore and hind feet fairly long, 

 fcubequal ; sole-pads 6. J\Jamma' 2 — 2 = 8. 



Skull, as compared with that of M. hlythii, with shorter 

 nasals, broader, flatter, and less ridged interorbital region, 

 and very much larger bulla?, which project out beyond the 

 occipital face of the skull about as in Lagurus. 



leeth on the whole much as in M. Olythii ; m^ similarly 

 with three triangles and a V instead of the four triangles 

 and a C characteristic of Pitymys. But m^ is more as in 

 Pilymys, for the combined filth and sixth space (counting 

 from behind *, and including the posterior transverse tri- 

 angle) is nearly or quite shut off from the anterior space, the 

 latter being, however, intermediate between the well-defined 



* I have always thought this the best way to count the spaces on 

 this tooth, and am pleased to find that Dr. Biiclmer has done the same 

 in his work on the Prejevalsky nianinials. Mr. Miller omits the posterior 

 transverse space, for reasons which do not convince me. 



